Looks like there may not be a hyrdaulic test today. Not sure why but also it looks like they moved ZA002 away from the fuel dock. There was a picture on Matt Cawby's web site for a Delta 777 (taken today) and in the background you could only see ZA001 no other aircraft at the fuel dock. Perhaps they moved the other airplanes in advance of the engine tests? Not sure where ZA002 went.
Matt Cawby's picture today (look in the background)